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Abstract

The changes in the final ventricular complex, the T-wave, and in the S-T segment of the electrocardiogram in coronary thrombosis have been extensively studied, both experimentally and clinically, since the early works of Herrick,1 Smith,2 and Pardee.3 As a result, it has been generally accepted that characteristic changes do occur in the majority of the cases, following an attack of coronary thrombosis.

In contrast, the changes in the initial ventricular complex have, up to recent years, received much less attention. Smith2 and Wearn4 observed that in coronary thrombosis the initial ventricular complex may not rarely be of a very small